See measurement dates by month. Click on the highlighted dates to view the type of control material. With the arrows you can see the months and measurement dates to the end of the calendar scheme.
NSVOK is certified according to ISO 9001:2015. The quality management certificate was issued on July 27, 2016 by TUVReinland and last renewed on July 19, 2022 under number 01 100 1620064 The certificate is valid until July 25, 2025.
NSVOK uses open source software based on Linux and Joomla. When determining the "assigned value", by means of an agreed value, the "robust average" method in the sense of ISO 13528:2005(E) is applied. The software is maintained by Kontrax AD.